Controlling dissociation by trapping trajectories in highly energetic states

Autor(es)

de Almeida, Jr., A. K. ^[1] ; Egydio de Carvalho, R. ^[1] ; de Lima, E. F. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Rio Claro, SP - Brazil

^[2] Univ Fed Sao Carlos UFSCAR, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS; v. 449, p. 101-110, MAY 1 2016.
• Citações Web of Science: 1

Resumo

We consider the non-linear dynamics of a polar diatomic molecule under the action of laser-field interactions and in the presence of a dissipation mechanism, described by the classical damped and driven one-dimensional Morse oscillator. In the absence of laser fields and dissipation, the phase space consists of a negative-energy bound region and a positive-energy dissociative region. Laser-molecule interaction changes the phase space allowing transitions from the bound to the dissociative region through chaotic routes. We show that for a spatially dependent dipole force, resonances with positive energies allow the trapping of trajectories in pseudo-bound states. We also show that, upon the introduction of dissipation, there exist non-trivial point attractors as well as chaotic attractors, which capture the trajectories in pseudo-bound states. Consequently, in addition to the parameters associated with the laser-molecule interaction, the amplitude of the dissipation acts as a control parameter of the photo-dissociation dynamics. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/20276-2 - Interferência de toros robustos na dinâmica de sistemas não-lineares
• Beneficiário: Ricardo Egydio de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/23648-9 - Controle quântico da matéria ultrafria
• Beneficiário: Emanuel Fernandes de Lima
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/00334-9 - The 7th Chaotic Modeling & Simulation International Conference - CHAOS-2014
• Beneficiário: Ricardo Egydio de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Reunião - Exterior